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Romashka [77]
3 years ago
11

Carbon dioxide (CO2) is a gaseous compound. Calculate the percent composition of this compound. Answer using three significant f

igures. What is the percent by mass of carbon? %
Chemistry
2 answers:
Tamiku [17]3 years ago
7 0

Carbon dioxide is a gaseous molecule made up of the elements, C and O. Each mole of carbon dioxide has one mole C and two mole oxygen atoms.

Molar mass of carbon dioxide (CO_{2})=(1 * 12.01\frac{g}{mol}) +(2* 16\frac{g}{mol})=44.01\frac{g}{mol}

Percentage by mass of carbon = \frac{(1*12.01\frac{g}{mol}) }{44.01\frac{g}{mol} } *100=27.3%

Percentage by mass of oxygen = \frac{(2*16\frac{g}{mol})}{44.01\frac{g}{mol} } *100=72.7%

Therefore C is 27.3 % and O is 72.7 % by mass in 1 mol CO_{2}

Andreyy893 years ago
7 0

Carbon dioxide (CO2) is a gaseous compound. Calculate the percent composition of this compound. Answer using three significant figures.

<span><span>What is the percent by mass of carbon? </span>% Answer- 27.3</span>

<span><span>What is the percent by mass of oxygen? </span><span>%  Answer- 72.7   </span></span>

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How is primary selection different from secondary succession?
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Answer:

Explanation:

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-<em>Akito</em>

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2 years ago
State four uses of protein in human body??​
Mamont248 [21]

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2 years ago
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What is the mass number of an atom that has six protons , six electrons and eight neutrons
Tresset [83]

Answer:

14

Explanation:

Given parameters:

Number of protons  = 6

Number of electrons  = 6

Number of neutrons = 8

Unknown:

Mass number  = ?

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7 0
2 years ago
C3H8 + 5O2 → 3CO2 + 4H2O
trasher [3.6K]

Answer:

16.5moles of CO2

Explanation:

Molar mass of O2 is 32g/Mol

No of mole = 880/32 = 27.5 moles

27.5 Mol of O2 gives X mole of CO2

5 mole of O2 gives 3 moles of CO2

No of mole of CO2 = (27.5×3)/ 5 = 16.5moles

7 0
3 years ago
How many atoms of Al(OH)3 in a 72 gram sample? please show work​
Lostsunrise [7]

Answer:

5.559*10^(23) atoms

Explanation:

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